import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

public class Test {
    private float f = 1.0f;
    static int n = 1;
    public static void main(String[] args) {
        System.out.println(1+"10"+3+"2");
        Map<Integer, Integer> map = new ConcurrentHashMap<>();
        Test t = new Test();
        Test.n = 2;
    }
}
